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Patent:US1204284


Patent:US 1204284
Title:Adding Machine
Date:07.11.1916
Place:
Country:USA
Person:A. W. Lawrence
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1204284 (espacenet),  US1204284 (uspto)


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Aus der Patentschrift US1204284